|Publication number||US5174415 A|
|Application number||US 07/807,998|
|Publication date||Dec 29, 1992|
|Filing date||Dec 16, 1991|
|Priority date||Dec 16, 1991|
|Also published as||CA2073655A1|
|Publication number||07807998, 807998, US 5174415 A, US 5174415A, US-A-5174415, US5174415 A, US5174415A|
|Inventors||Paul W. Neagle, William R. Dubosh, John R. Mauck|
|Original Assignee||Teledyne Princeton, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (10), Referenced by (65), Classifications (13), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to a fork lift truck having its forward support wheels mounted on arms which are rotatable to upright position to minimize the space taken up by the truck during storage.
Fork lift trucks come in a variety of sizes and have many and varied specialized functions. One inventive concept of importance herein is the provision of a relatively small-sized truck allowing an operator to walk behind the truck, operating manual controls during normal operations. When the truck is not in use it may be desirable to store it in a way to minimize storage space in the particular manufacturing or warehouse facility where the truck is normally used. Additionally, it may be desirable to mount the small-sized fork lift truck on the flat bed of a trailer and have it be of minimal projection beyond the trailer surface.
An example of a fork lift truck having both retractable wheels and being mountable on a trailer is shown in each of U.S. Pat. Nos. 3,799,379; 4,061,237; and 4,921,075, although the latter does not show retractable wheels.
U.S. Pat. Nos. 3,972,427; 4,460,064; 4,571,139; and 4,613,272 disclose fork lift trucks of very specialized nature which have retractable or collapsible wheel structure combined with the feature of actually loading the fork lift truck onto the support surface of the trailer or other vehicle involved.
This invention involves a relatively small-sized fork lift truck, normally where the operator walks behind the truck and manually controls the operation thereof. It involves a caster wheel on the rear and two forwardly projecting support wheels to provide a three point, essentially triangular, support system for the truck. The caster wheel is power driven by hydraulic fluid operating through the caster axle.
The two front wheels are mounted on elongated arms which extend parallel to the tines of the fork. The arms are connected to the framework of the truck by a pair of sleeves which telescope over the ends of an axle projecting from each side of the frame.
At such times as the user desires to store the fork lift truck, he manually removes the forks and actuates a hydraulic system to pivot the forwardly extending arms and wheels to a vertical position with the arms straddling the upwardly extending mast. Alternatively, the arms may be raised manually.
Smaller, storage support wheels, are mounted on a rearwardly extending bracket on each of the sleeves. The brackets extend radially from the two sleeves in a direction essentially opposite to the extension of the forwardly extending arms.
The arms are caused to rotate vertically to decrease the forward part of the space taken up by the fork lift and by the structure of this invention, the upwardly extending arms are caused to contract inwardly toward the mast to reduce the transverse dimension of the lift truck when the arms are in upright storage position. This is accomplished by a motor and hydraulic system which provides the power to rotate each sleeve and thereby the forwardly extending arms. Each sleeve is caused to rotate and telescope inwardly over its associated axle by virtue of a radially extending lug on the surface of each axle end, which lug fits into a diagonally extending slot in each sleeve. The combination of lug and slot cams the sleeves inwardly on the axle as the arms rotate upward.
Objects of the invention not clear from the above will be understood fully by a review of the drawings and description of the preferred embodiment which follow.
FIG. 1 is a perspective view of a fork lift truck according to this invention;
FIG. 2 is a fragmentary sectional view of the connecting apparatus between the axle of the truck and the support arms of the same;
FIG. 3 is a right-hand side elevational view of the truck of FIG. 1 with the wheels in operative support position;
FIG. 4 is a side elevational view of the fork lift truck of this invention but with the support wheels rotated to inoperative storage position;
FIG. 5 is a top plan view of the fork lift truck of FIG. 3;
FIG. 6 is a top plan view of the fork lift truck of FIG. 4;
FIG. 7 is a sectional view taken along line 7--7 of FIG. 3;
FIG. 8 is a fragmentary side elevational view of the mast and forks of the fork lift truck of this invention;
FIG. 9 is a fragmentary sectional view taken along line 9--9 of FIG. 2;
FIG. 10 is a sectional view taken along line 10--10 of FIG. 9;
FIG. 11 is a fragmentary side elevational view of the fork lift truck of this invention in storage position and mounted on a trailer;
FIG. 12 is a side elevational view of FIG. 7 with the brake in released position; and
FIG. 13 is a side elevational view of FIG. 7 with the brake applied.
Looking to FIG. 1, a fork lift truck 10 according to this invention includes a mast 12 extending generally upward from a frame 14. Intermediate the two upwardly extended branches of mast 12 is a first piston and cylinder combination 16 connected to a yoke 18 which is a part of a general framework comprising a carriage 20. The mast 12 serves to guide the carriage 20 within a defined path of travel when hydraulic fluid actuates the piston and cylinder combination 16 to drive the carriage upward or downward. It is understood that the piston and cylinder combination may include a positive upward drive of hydraulic fluid and the descending aspect of the carriage may be accomplished by a positive downward drive of hydraulic fluid or merely an exhaust valve allowing the carriage to descend by gravity by merely opening the valve to allow the drainage of hydraulic fluid from the cylinder below the piston. Either mechanism will work and is within the contemplation of this invention.
The piston and cylinder combination 16 is connected to the framework 14 by a suitable hinged connection 22.
A pair of tines 24 extend forwardly from the carriage 20 as a part of the fork for the conventional purpose of engaging and lifting a product to be transported, the product is not shown for purposes of convenience. The tines may be removed from the carriage 20 if desired for storage or any other reason and they may be adjusted as to width in a suitable operative position as is well known in the art.
The fork lift truck 10 is supported on a substrate 25, see FIG. 3, by a pair of front wheels 26 mounted on the forward end of support arms 28. It will be observed that the upper surface of each wheel 26 is covered by a fender 30. It will be observed in FIG. 1 that each fender 30 has an upper surface which ends in a chisel point and the surface slops inward toward the tines 24. The reason for the fender 30 is to prevent product which is being transported by the truck from being engaged by the wheel 26 when the truck is moving and the wheel rotating. The detrimental effect of such contact is obvious, but the inwardly slopping surface may not be so obvious, it is to provide an inward bias to any product which may be on the truck, to push the product toward the center of the truck support system and away from the wheels. Specifically, the fender 30 prevents frictional engagement of product and wheels 26 and urges product toward the tines. Fenders 30 are clearly optional features of the truck 10.
Rear support of the truck is supplied by a caster wheel 32 (see FIGS. 3 and 4) which is supported on an axle. The caster axle is surrounded by a drive motor 34 to provide a power drive for the caster wheel when actuated by controls 36. Controls 36 are manually manipulable by an operator who may walk behind the fork lift. The operator is able to actuate the power drive of the system by hand operation and is able to steer the truck by the handle 38 which is directly connected to caster wheel 32. An automatic braking system 39 for the caster wheel 32 locks the wheel in place when the operator is not moving the truck. This safety feature will be explained in more detail in a discussion of FIGS. 12 and 13.
Looking to FIG. 7, the caster wheel 32 is supported on the framework 14 through an upwardly extending rod 40 projecting into a set of roller bearings 42. The rod 40 is connected in turn with a housing 44 which includes an off set pivot connection and the drive motor 34.
Looking to FIG. 8, framework 14 is connected to mast 12 in several ways including a second piston and cylinder combination 46 which serves to allow the operator to pivot the mast backward, to the right as illustrated in FIG. 8, and thereby, tilt the tines 24 upward after a suitable load is supported thereon. It is a safety feature which is known in the industry and it minimizes the likelihood that a product being transported will slide or roll off the tines upon a sudden stop of the truck for whatever reason.
The equipment indicated as being supported by the framework 14 on the rear of the truck intermediate the mast 12 and handle 38 includes a reservoir for hydraulic fluid and a drive motor to transmit hydraulic fluid to the various piston and cylinder combinations which have been and will subsequently be described in relation to the operation of this fork lift truck. The individual components on the rear of the fork lift truck have not been labeled or identified specifically because their particular configuration is not critical. For convenience, the reservoir, drive motor, etc. are identified by the numeral 48.
The hydraulic system and drive motor are operatively connected to a pair of piston and cylinder combinations 50, one on each side of the frame, which are connected between a bracket 52 projecting from the upwardly extending mast and another bracket 54 projecting radially from a projection or sleeve 56. Simultaneous actuation of the third piston and cylinder combinations 50 causes hydraulic fluid to drive the pistons out of the cylinder and thereby rotate the arms 28 and wheels 26 through a vertical arc to a position where they are essentially parallel with the mast 12.
Alternatively the piston and cylinder combination 50 may not be connected to the hydraulic system. The force used to raise arms 28 may be manual.
Each sleeve 56 includes a storage wheel unit 58 which is mounted in position on the periphery of the sleeve by a radially extending bracket 60.
An observation of FIGS. 2, 9, and 10 will show that each sleeve 56 is telescopingly mounted over a stub axle 62 which projects transversely from the frame 14. It will be observed that there are two separate axles 62 on the apparatus illustrated but there is no reason the axle could not extend completely across the framework and provide only one axle if desired. Note also that the preferred embodiment shows the sleeve 56 telescoping over the exterior of axle 62. The reverse could be true if desired.
A lug 64 is shown projecting radially from a surface of axle 62 into a diagonally extending slot 66 in the surface of sleeve 56. The embodiment shown in FIG. 2 is with the wheel 26 and arm 28 in operative support position as illustrated in FIG. 1. It will be observed that there is a slight parallel jog at 67 in the slot 66 of FIG. 2 to accommodate the lug 64 when the support wheel 26 is in operative support position. It provides a little better frictional engagement to prevent an accidental pivoting of the arm 28 upward during operation, and a second safety feature is provided in the form of a tapered peg 68 projecting through mating holes in the sleeve 56 and axle 62 to further prevent accidental pivoting.
In the preferred embodiment a plate (not shown) covers slot 66 to prevent the accumulation of debris. Also, the peg 68 may be secured in a spring biased manner to sleeve 56 to minimize it being accidentally dislodged.
Looking particularly to FIGS. 9 and 10, a fourth piston and cylinder combination 70 is illustrated and its purpose is to assist the third piston and cylinder combinations 50 in their rotation of the sleeve 56, as will be explained subsequently. Piston and cylinder combination 70 includes a piston 72 housed in a cylinder 74. Piston 72 is connected to an elongated piston rod 76 which extends beyond cylinder 74 to a bearing race 78. This combination allows the piston 72, piston rod 76, and sleeve 56 to reciprocate axially as a unit while at the same time allowing sleeve 56 to rotate with respect to axle 62 by virtue of the bearing race 78.
A guide block 80 is mounted on the interior of the axle 62 to assist in guiding and aligning piston rod 76 in its reciprocation but it serves another function as best illustrated in FIG. 10. Block 80 is pined against rotation with respect to axle 62 by a pin 82 which is press fitted into place. A cap screw 84 is threaded into the pin 82 in stationary position and serves as the male part of a threaded connection with lug 64. In assembly, the axle 62 and sleeve 56 are telescoped together and then the lug 64 is inserted through slot 66 and into the pin where it is threaded onto the cap screw 84 to lock the sleeve 56 and axle 62 together in operative position.
Looking to FIGS. 12 and 13, housing 44 covers an automatic braking system 39. The system includes a cylinder 87 suspended on a peg 89 by an upwardly extending bracket 91. The suspension allows cylinder 87 to pivot about peg 89 in a vertical plane.
An opening 93 near the top of cylinder 87 is connected to a hose 95. Hose 95 connects the interior of the cylinder to the hydraulic fluid driving the motor 34. Fluid entering cylinder 87 drives piston 97 downward against the bias of a plurality of belville springs 99. Springs 99 circumscribe a piston rod 100 which is pivotally connected at its lower end to a pin 102. Pin 102 serves as an axle for rod 100 and two links 104 and 106, all being pivotally attached to pin 102. One end of link 104 is pivotally mounted over a stationary pin 108. The distal end of link 106 is pivotally mounted over pin 110 which projects through an opening in lever 112. The lower end of lever 112 is secured to a rod 114 which projects into the housing of motor 34. A brake shoe (not shown) engages a drum around the axle of wheel 32 when the hydraulic system is not activated to drive motor 34 to thereby automatically brake the wheel. This is a safety feature whereby the braking system is always automatically locked when the motor 34 is not operating, as seen in FIG. 13.
When the operator is manipulating controls 36, fluid surges through hose 95 and into the cylinder 87 to drive piston 97 downward against springs 99. Thereby rod 100, in combination with links 104, 106, pivots lever 112 which serves to release the brake, as seen in FIG. 12. This allows wheel 32 to rotate and move the fork lift in response to hydraulic fluid delivered to motor 34.
In operation, the operator will grasp the controls 36 and depress the handle 38 as needed and will urge the fork lift to whatever lifting and moving operation is required in the orientation illustrated in FIG. 1.
After the operator has completed using the fork lift truck, it is transported to a storage area. Then the tines 24 is removed from carriage 20 and stored separately. Then simultaneous actuation of third piston and cylinder combination 50 and fourth piston and cylinder combination 70 through controls 36 delivers hydraulic fluid under pressure to piston and cylinder combination 50 causing the combination to rotate the sleeve 56 and raise wheels 26 and arms 28 through an arc until the arms 28 are essentially parallel with mast 12. Where there is no hydraulic connections to lift arms 28 they are lifted manually.
Simultaneously with the actuation of piston and cylinder combination 50, the system may feed hydraulic fluid under pressure through an inlet 86, see FIG. 9, and along a passage 88 in the wall of cylinder 74 to the interior of the cylinder where it will exert pressure on piston 72 to move it to the left as seen in FIG. 9 and thereby urge sleeve 56 to the left. It should be emphasized that this is not required because piston and cylinder combinations 50 should provide adequate power, but it is an option if desired. Note that the seal 90 surrounding piston rod 76 will prevent hydraulic fluid from leaking from the cylinder 74.
During the rotation of sleeve 56, pin 64 cams sleeve 56 to rotate and translate in telescoping relationship with axle 62 by acting against the surface of slot 66. As is obvious, the tapered safety pin 68 is removed before piston and cylinder combinations 50 are actuated.
When sleeve 56 rotates, the tines must be on the substrate 25 to prevent the fork lift truck from tilting forward as the wheels 26 leave the substrate. This is best illustrated in FIG. 4. The three point triangular support system provides good stability during normal operations on relatively flat surfaces and while the truck is operating under normal conditions. However, the wide spaced triangular three point support system is unnecessary when the truck is in storage against a warehouse wall. Accordingly, the storage wheels 58 are mounted on brackets 60 in positions such that they engage substrate 25 to provide an alternative three point support stance for the truck, (1) after the tines 24 are removed, (2) the truck is pushed against a wall and (3) the handle 28 is lifted to a vertical position as shown in FIG. 11. In that condition the truck takes up very little floor space. Once it is needed again operations will be reversed, namely, the handle 38 is tilted downward, the truck removed from against the wall, the tines installed in place on the carriage and pressed to their lower position, then the hydraulic system is reversed.
In the preferred embodiment, the third piston and cylinder combinations 50 are one-way acting pistons and have no positive drive to turn the sleeves 56 to rotate the arms 28 downward to the horizontal position. It could be otherwise, but it is a more expensive design. To accommodate this minimal need to start the rotation of the arm 28 downward, since it is in near gravity neutral position in storage, a second inlet 92, see FIG. 9, is provided through the sidewall of cylinder 74 and in this case on the left-hand side of piston 72. Hydraulic fluid is fed through second inlet 92 to drive piston 72 to the right and thereby rotates sleeve 56 and lug 64 cams the structure into place. Little force is required to accomplish this purpose because gravity is an assist as the wheels 26 rotate downward.
Looking now to FIG. 11, it will be observed that the fork lift truck of this invention may be mounted on the front or rear end of a trailer 94 by the following procedure. First the tines 24 is inserted into pockets 96 on the underside of the support bed 98 of the trailer. Then the controls 36 are actuated to bring tines 24 down (which has the effect of lifting the fork lift truck up to the position shown in FIG. 11). Thereby, the fork lift truck may be transported to another site to be used in unloading the trailer, if desired. It is clear that the arms 26 should be rotated to storage position prior to the time the fork lift is actuated to lift itself into the position shown. Those having ordinary skill in the art will understand exactly how to accomplish the desired result. What may not be so obvious is the fact that the compact profile resulting from the previously described storage operations allows the fork lift truck to be stored on either the front or rear edges of the trailer 94. The fact that the truck is retracted longitudinally and compressed transversely allows it to fit into place between the front of the trailer and the tractor without preventing normal turning of the tractor-trailer during normal operations and with complete safety. The illustrated embodiment shows the fork lift truck mounted on the rear of a trailer, but it should be understood that it could be mounted on the front of the trailer without problems.
Having thus described the invention in its preferred embodiment, it will be clear that modifications may be made to the structure without departing from the spirit of the invention. Accordingly, it is not intended that the language of the specification nor the drawings illustrating the same be limiting on the invention. It is intended that the invention be limited only by the scope of the appended claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3799379 *||Jan 26, 1973||Mar 26, 1974||Grether T||Fork lift|
|US3972427 *||Sep 25, 1974||Aug 3, 1976||The Boeing Company||Appendant elevatable loader for vehicles|
|US4061237 *||Jul 10, 1975||Dec 6, 1977||The Brevet Corporation||Forklift truck|
|US4460064 *||Jun 3, 1982||Jul 17, 1984||Lutz David W||Forklift truck capable of raising and lowering itself and a load back and forth between two surfaces at different levels|
|US4513837 *||Jul 25, 1983||Apr 30, 1985||Archer Farley J||Motorcycle with outrigger wheels|
|US4571139 *||May 3, 1983||Feb 18, 1986||Superior Handling Equipment, Inc.||Self-propelled freight handling truck|
|US4613272 *||Feb 1, 1985||Sep 23, 1986||Bielefelder Kuchenmaschinen-Und Transportgeratefabrik Gmbh||Method of operation for loading a motorized floor truck and support carriage therefor|
|US4921075 *||Feb 21, 1989||May 1, 1990||Teledyne Princeton, Inc.||Fork lift|
|US4987976 *||Jun 30, 1986||Jan 29, 1991||Vermette Machine Company, Inc.||Telescoping portable lift|
|US5086847 *||Nov 2, 1990||Feb 11, 1992||Meiners Elmo R||Height adjustment mechanism for farm implements|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5415516 *||Jul 11, 1994||May 16, 1995||Anvil Products||Compact trailer having hydraulic fork lift|
|US5575604 *||Apr 26, 1995||Nov 19, 1996||Teledyne Princeton, Inc.||Apparatus and method for mounting a forklift on a carrier|
|US5813820 *||Sep 20, 1996||Sep 29, 1998||Teledyne Princeton, Inc.||Apparatus and method for mounting a forklift on a carrier|
|US5879124 *||Apr 14, 1997||Mar 9, 1999||Gerardus J. Brouwer||Vehicle with retractible rear wheel assembly|
|US5911408 *||Feb 11, 1998||Jun 15, 1999||Stertil B.V.||Transportable lift|
|US5992572 *||Apr 2, 1999||Nov 30, 1999||Crown Equipment Corporation||Personnel carrying vehicle|
|US6000502 *||Apr 15, 1998||Dec 14, 1999||Crown Equipment Corporation||Personnel carrying vehicle|
|US6024535 *||Aug 27, 1998||Feb 15, 2000||Teledyne Princeton, Inc.||Method for mounting a forklift on a carrier|
|US6062800 *||Feb 24, 1998||May 16, 2000||Eagle Picher Industries, Inc.||Forklift frame and mounting kit|
|US6120232 *||Sep 3, 1999||Sep 19, 2000||Terex Corporation||Apparatus and method for mounting a forklift on a carrier|
|US6174124||Sep 1, 1998||Jan 16, 2001||Crown Equipment Corporation||Load trays for personnel carrying vehicles|
|US6199665 *||Oct 22, 1998||Mar 13, 2001||Crown Equipment Corporation||Straddle arm for fork lift truck|
|US6241047||Feb 14, 2000||Jun 5, 2001||Crown Equipment Corporation||Personnel carrying vehicle|
|US6279686 *||Jan 24, 2000||Aug 28, 2001||Kaup Gmbh & Co., Kg||Attachment for flood and yarn trucks with a lift mast, especially for fork lift trucks|
|US6343674||Feb 3, 2000||Feb 5, 2002||Hugh Sexsmith||Multi-terrain vertical lift transporter|
|US6409153 *||May 14, 2001||Jun 25, 2002||Kenneth D. Norris||Small vehicle storage lift|
|US6551050 *||Jun 23, 2000||Apr 22, 2003||Kaltec Of Minnesota||Rolling stabilizer lift attachment|
|US6572322||Nov 15, 2001||Jun 3, 2003||Cargotec, Inc.||Mounting system for truck mounted beverage handler|
|US6688838||Mar 4, 2002||Feb 10, 2004||Applied Materials, Inc.||Cleanroom lift having an articulated arm|
|US7281723 *||Sep 13, 2005||Oct 16, 2007||Miller-St. Nazianz, Inc.||Sprayer strut suspension|
|US7284764 *||Feb 25, 2005||Oct 23, 2007||Miller-St. Nazianz, Inc.||Sprayer strut suspension|
|US7478704 *||Jul 19, 2004||Jan 20, 2009||Church Clyde M||Lift cart|
|US7524159||Apr 10, 2006||Apr 28, 2009||U Box It Inc.||Method of receiving and transporting solid waste|
|US7865286||May 1, 2010||Jan 4, 2011||Hall Walter D||Lift truck safety system|
|US7927061||May 23, 2008||Apr 19, 2011||Moffett Research & Development Limited||Mounting system for mounting a forklift on a vehicle|
|US7927063||May 23, 2008||Apr 19, 2011||Moffett Research & Development Limited||Method for mounting a forklift to a vehicle|
|US8011677 *||Dec 22, 2006||Sep 6, 2011||Coca-Cola Bottling Co. United, Inc.||Pallet jack system and method for the transportation of stackable packaged goods pallets|
|US8078368||Nov 18, 2010||Dec 13, 2011||Walter Hall||Lift truck safety system|
|US8360443 *||Mar 18, 2010||Jan 29, 2013||Coca-Cola Bottling Co., United, Inc.||Pallet jack system and method for the transportation of stackable packaged goods pallets|
|US8376089||Dec 14, 2007||Feb 19, 2013||Bishamon Industries Corporation||Lift for skids and pallets|
|US8668053 *||Dec 12, 2007||Mar 11, 2014||Jungheinrich Aktiengesellschaft||Ground conveyor|
|US8746153||Aug 25, 2011||Jun 10, 2014||Leonard D. Barry||Go-between container transfer and system|
|US8777545||Dec 26, 2009||Jul 15, 2014||Bright Coop, Inc.||Free lift mast for truck mounted forklift|
|US9045321 *||Jan 10, 2011||Jun 2, 2015||Recon Engineering, Inc.||Load transport system and method|
|US9421898||Jun 29, 2012||Aug 23, 2016||Guillaume Huet||Trailer for lifting a heavy load and method for lifting the heavy load using the same|
|US9475513 *||Oct 15, 2014||Oct 25, 2016||Big Lift, Llc||Pallet truck|
|US20030205433 *||May 3, 2001||Nov 6, 2003||Hagman Earl L||Variable straddle transporter lift with programmable height positions|
|US20060027987 *||Feb 25, 2005||Feb 9, 2006||Prohaska James B||Sprayer strut suspension|
|US20060045696 *||Jul 19, 2004||Mar 2, 2006||Church Clyde M||Lift cart|
|US20070205055 *||Feb 13, 2007||Sep 6, 2007||Daryl Renshaw||Trailerable Miniature Forklift for Moving Portable Toilet Enclosures|
|US20070207023 *||Mar 5, 2007||Sep 6, 2007||O'keeffe Eric||Forklift truck|
|US20080029346 *||Apr 11, 2007||Feb 7, 2008||Barry Leonard D||Go-between container transfer and system|
|US20080142307 *||Dec 12, 2007||Jun 19, 2008||Jungheinrich Aktiengesellschaft||Ground conveyor|
|US20080292437 *||May 23, 2008||Nov 27, 2008||Moffett Research & Development Limited||Mounting system for mounting a forklift on a vehicle|
|US20080292448 *||May 23, 2008||Nov 27, 2008||Moffett Research & Development Limited||Method for mounting a forklift to a vehicle|
|US20090035106 *||Sep 30, 2008||Feb 5, 2009||U Box It, Inc.||Method of receiving and transporting solid waste|
|US20100295261 *||Mar 18, 2010||Nov 25, 2010||Coca-Cola Bottling Co., United, Inc.||Pallet jack system and method for the transportation of stackable packaged goods pallets|
|US20110091306 *||Dec 26, 2009||Apr 21, 2011||Francois Roux||Free lift mast for truck mounted forklift|
|US20110206489 *||Jan 10, 2011||Aug 25, 2011||Don Ford||Load transport system and method|
|US20160023872 *||Oct 15, 2014||Jan 28, 2016||Big Lift, Llc.||Pallet truck|
|US20160200336 *||Jul 7, 2015||Jul 14, 2016||Samsung Medison Co., Ltd.||Ultrasonic imaging device|
|US20160245917 *||Feb 17, 2016||Aug 25, 2016||Manitowoc Crane Companies, Llc||Ruggedized packaging for linear distance measurement sensors|
|CN101610968B||Dec 14, 2007||May 8, 2013||比沙门工业股份有限公司||Lift for skids and pallets|
|CN101837768A *||May 10, 2010||Sep 22, 2010||潘世澄||Device for replacing battery case under electric automobile chassis|
|CN101837768B *||May 10, 2010||Nov 19, 2014||潘世澄||Device for replacing battery case under electric automobile chassis|
|EP1043267A1 *||Apr 4, 2000||Oct 11, 2000||Carrosserie Industrielle et Prototypes, ayant pour sigle CIP, Société à responsabilité limitée||Lift truck for a transport vehicle like a trailer|
|EP2518005A1 *||Mar 9, 2012||Oct 31, 2012||STILL GmbH||Industrial truck|
|EP2518007A1 *||Mar 9, 2012||Oct 31, 2012||STILL GmbH||Industrial truck, in particular forklift equipped with a counterweight|
|WO1996001749A1 *||Jul 10, 1995||Jan 25, 1996||Anvil Products Corporation||Compact trailer having hydraulic fork lift|
|WO1998009910A1 *||Sep 8, 1997||Mar 12, 1998||Crown Equipment Corporation||Personnel carrying vehicle|
|WO2001083356A1 *||May 3, 2001||Nov 8, 2001||Hagman Earl L||Variable straddle transporter lift with programmable height positions|
|WO2008085295A3 *||Dec 14, 2007||Sep 18, 2008||Bishamon Ind Corp||Lift for skids and pallets|
|WO2011087906A1 *||Jan 13, 2011||Jul 21, 2011||Don Ford||Load transport system and method|
|WO2011139260A1 *||May 28, 2010||Nov 10, 2011||Hall Walter D||Lift truck safety system|
|WO2014169750A1 *||Mar 19, 2014||Oct 23, 2014||Wuxi Zhenda Machinery And Electrical Appliance Co., Ltd.||Tire lifting frame|
|U.S. Classification||187/234, 414/467, 280/43.23, 180/209, 187/231|
|International Classification||B62D51/06, B66F9/06, B66F9/075, B62D61/12|
|Cooperative Classification||B66F9/06, B66F9/07563|
|European Classification||B66F9/06, B66F9/075L|
|Dec 16, 1991||AS||Assignment|
Owner name: TELEDYNE PRINCETON, INC.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:NEAGLE, PAUL W.;DUBOSH, WILLIAM R.;MAUCK, JOHN R.;REEL/FRAME:005969/0439
Effective date: 19911211
Owner name: TELEDYNE PRINCETON, INC., CANADA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEAGLE, PAUL W.;DUBOSH, WILLIAM R.;MAUCK, JOHN R.;REEL/FRAME:005969/0439
Effective date: 19911211
|Aug 6, 1996||REMI||Maintenance fee reminder mailed|
|Dec 29, 1996||LAPS||Lapse for failure to pay maintenance fees|
|Mar 11, 1997||FP||Expired due to failure to pay maintenance fee|
Effective date: 19970101
|Apr 21, 2000||AS||Assignment|
Owner name: TEREX CORPORATION, DELAWARE CORPORATION, CONNECTIC
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TELEDYNE PRINCETON, INC., ONTARIO CORPORATION;REEL/FRAME:010766/0395
Effective date: 19990311